﻿/* dk2Repository - Copyright (C) 2011 Daniel Kuczewski http://www.dk2.de/

 * This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */

using System;
using System.Text;

namespace dk2Repository.QueryBuilder.MySql
{
    internal class MySqlWhereBuilder : WhereBuilder
    {
        public MySqlWhereBuilder(ISqlBuilder builder) : base(builder)
        {
        }

        public override string CreateSql()
        {
            if (WhereClauses.Length == 0)
                return "";

            var sb = new StringBuilder();
            sb.Append("WHERE ");

            foreach (var group in WhereClauses)
            {
                sb.Append("(");
                foreach (var whereClause in group)
                {
                    sb.Append(whereClause).Append(" AND ");
                }

                sb.Remove(sb.Length - 5, 5);
                sb.Append(") OR ");
            }

            sb.Remove(sb.Length - 4, 4);

            return sb.ToString();
        }

    }
}
